“We got him all cleaned up and he will be back doing his rehab before you know it and he will be back playing before you know it,” Garrett said.

Lee suffered the injury May 27 during the Cowboys’ first day of organized team activities. The timetable for recovery is typically seven to nine months. But head athletic trainer Jim Maurer said each individual’s rehab schedule is different.

“I have already told [Lee], ‘We’re going to be fine,’” Maurer said. “You’re going to play for six more years. This ACL – we’re going to get this fixed.”

Clarence Hill Jr. of the Star-Telegram provided more background on the status of Lee's knee:

Updates from Tuesday, June 10

David Moore of The Dallas Morning News provides an update on Sean Lee's knee surgery:

Calvin Watkins of ESPNDallas.com shared a photo on Twitter and a video on Instagram of Lee being taken off the practice field:

Cowboys beat writer Clarence Hill included additional perspective:

Joe Trahan of WFAA 8 and Jesse Holley of CBS provided another look at the situation along with their thoughts:

Last season, Lee played in just 11 games before sustaining a neck injury Dec. 9. The 27-year-old was still able to make a dent during his time on the field, recording 99 total tackles, four interceptions for 174 yards and a touchdown along with six passes defended.

Pete Damilatis of Pro Football Focus noted a shocking stat about the Cowboys linebacker:

During the 2014 NFL draft, Dallas took a player who might just be a backup to watch following Lee's injury. Owner Jerry Jones spoke about fourth-round pick Anthony Hitchens, per Carlos Mendez of the Star-Telegram:

We saw a guy who could run with size, and we saw one of the few inside linebackers that we thought could come in here and help us if we lost Sean Lee. So we saw a guy who could definitely improve us from where we were last year when we lost Sean Lee.

I’m not saying he’s Sean Lee, but he can drop back and get back and as Jason would tell you, we’re going to do a better job of doing that and playing the ball up in front of us. What he did do in his collegiate career is a real good job of getting back and getting in lanes. So that’s what we saw and is just right what we need.

After releasing longtime veteran pass-rusher DeMarcus Ware this offseason, the Cowboys were looking to Lee to return to full health and shore up the middle linebacker position while serving as a leader on defense.

Now Dallas will have to lean on another player to step up at the position alongside presumably Bruce Carter and Justin Durant in the linebacking corps.